body{

    background-image: url(ww.jpg) ;
margin:0 auto 0;
   
}


#zhuti{
    height: 1380px;
    width: 900px;
  

}
#tb{
    height: 300;
    width: 900;
    background-image: url(yy.jpeg)
}
#zj{
    height: 1000;
    width: 900;
    background: rgb(148, 116, 180)
}
#zuihou{
    height: 20px;
    width:900 ;
    background: rgb(240, 235, 235)
}
a{
text-decoration: blueviolet;
color:rgb(55, 43, 226);
height:50px;
background: rgb(95, 42, 165);
width: 200px;
float: left;
padding-left: 25px;


}
a:hover{
    background: red;
}
#zj p{
    text-align: center
}